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Calculate the number of chromium atoms in 78.82 g of potassium dichromate. 2.248 x 1044 Cr atoms 3.227 x 1023 Cr atoms (Correct answer) 9.490 x 1025 Cr atoms 1.613 x 1023 Cr atoms 1.124 x 1024 Cr atoms (Your answer)

Calculate the number of chromium atoms in 78.82 g of potassium dichromate. 2.248 x 1044 Cr atoms 3.227 x 1023 Cr atoms (Correct answer) 9.490 x 1025 Cr atoms 1.613 x 1023 Cr atoms 1.124 x 1024 Cr atoms (Your answer)

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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### Practice Problem: Calculating Chromium Atoms in Potassium Dichromate **Question:** Calculate the number of chromium atoms in 78.82 g of potassium dichromate. **Options:** - \(2.248 \times 10^{24}\) Cr atoms - \(3.227 \times 10^{23}\) Cr atoms *(Correct answer)* - \(9.490 \times 10^{25}\) Cr atoms - \(1.613 \times 10^{23}\) Cr atoms - \(1.124 \times 10^{24}\) Cr atoms *(Your answer)* **Explanation:** This problem requires the calculation of the number of chromium atoms present in a given mass of potassium dichromate (K₂Cr₂O₇). By using the molar mass of potassium dichromate and Avogadro’s number, you can determine the correct number of chromium atoms.
Transcribed Image Text:### Practice Problem: Calculating Chromium Atoms in Potassium Dichromate **Question:** Calculate the number of chromium atoms in 78.82 g of potassium dichromate. **Options:** - \(2.248 \times 10^{24}\) Cr atoms - \(3.227 \times 10^{23}\) Cr atoms *(Correct answer)* - \(9.490 \times 10^{25}\) Cr atoms - \(1.613 \times 10^{23}\) Cr atoms - \(1.124 \times 10^{24}\) Cr atoms *(Your answer)* **Explanation:** This problem requires the calculation of the number of chromium atoms present in a given mass of potassium dichromate (K₂Cr₂O₇). By using the molar mass of potassium dichromate and Avogadro’s number, you can determine the correct number of chromium atoms.
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